NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.

14.8. Tips
on Using Command History

If you type history, a
numbered list scrolls by very quickly, showing you the previous 500
commands you have used.

You probably do not need to see all of the last 500 commands, so
the command history 20 might be
useful. This way, only the previous 20 commands you typed are
displayed (you can use any quantity as an argument of the
history command).

14.8.1. Other Shortcuts

Here are other command history shortcuts which may be useful to
you:

"Bang, bang": Typing !! (called "bang
bang") executes the last command in the history.

"Bang number": Typing
!number (as in !302) executes the command which is numbered 302 in
the history file.

"Bang string": Typing
!string (as in !rpm) executes a command with the most recent
matching string from the history file.

[Up arrow] and [down arrow] KEYCAP" > [Enter] to execute the
command, just as if you had typed it on the command line.